Prof. R. D. Tyagi is an internationally recognized Professor of Biochemical Engineering and biotransformation with ‘Institut national de la recherché Scientifique - Eau, terre, et environnement’, (INRS-ETE), University of Québec, Canada. He also holds Adjunct Professor position at the University of Missouri-Columbia, USA. Prof Tyagi has published over 600 papers/communications, which include 21 books, 75 book chapters, 10 research reports, nine patents, etc. He is Associate Editor of ‘‘Practice Periodical of Hazardous, Toxic & Radioactive Waste Management- Am.Soc.Civil Engineering’’ and serves on the editorial board of Process Biochemistry and Bioresource Technology. He has been recognised by many national and international awards and honours. He is member of ‘‘European Academy of Sciences and Arts’’. He conducts research on hazardous/solids waste management, water/wastewater treatment, and wastewater sludge treatment/disposal, bioconversion of wastewater and wastewater sludge into value added products.